387889266 has 16 divisors (see below), whose sum is σ = 777445344. Its totient is φ = 129018624.

The previous prime is 387889219. The next prime is 387889291. The reversal of 387889266 is 662988783.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66415 + ... + 72018.

It is an arithmetic number, because the mean of its divisors is an integer number (48590334).

Almost surely, 2^387889266 is an apocalyptic number.

387889266 is an abundant number, since it is smaller than the sum of its proper divisors (389556078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387889266 is a wasteful number, since it uses less digits than its factorization.

387889266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138905.

The product of its digits is 6967296, while the sum is 57.

The square root of 387889266 is about 19694.9045694565. The cubic root of 387889266 is about 729.2939103647.

The spelling of 387889266 in words is "three hundred eighty-seven million, eight hundred eighty-nine thousand, two hundred sixty-six".